Building A Ball Mill For Grinding Chemicals .scrubber is a high rpm autogenous mill. scrubber will rotate at 75% of the critical rpm. the critical rpm is the rpm required for the material to cling to the wall and rotate with the drum without falling. scrubber uses the large rocks to break up the finer material in the same way a ball millsend message
Praha is a leader in the mining industry, mainly with sand and gravel equipment, milling equipment, mineral processing equipment, building materials equipment, etc..